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Complete Guide On The Use And Applications of Switching Power Supplies

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In a simple way, a switching power supply is an electronic device that converts and regulates the voltage of electric power. 

Switching power supplies

Switching power supplies can provide electric power to one or more electric loads and their primary function is the conversion of electric current from a singular source to the proper voltage, current and frequency to power the load.  

They also function in producing the output power by changing an input signal to an output signal. 

Usually, switching power supplies include switching regulators to efficiently convert electrical power, and they are also used to generate the desired voltage. 

Switching power supplies are otherwise known as switch-mode products or switching mode power supplies (SMPSs). 

However, the choice of a switching power supplies matters so much. For this reason, it is advisable to partner with reputable switching power supplies manufacturers, if only you hope to have a durable and high-quality product.

Let’s Help You Choose The Right Switching Power Supply

Are you considering purchasing switching power supplies? If yes, here are some important factors that will guide you in making the best choice. 

1. Determine the number of outputs and the levels of output

You would need to check the voltage tolerance of the switching power supply and determine if the design of your choice can withstand the difference, if any. 

2. Select appropriate power

For your switching power supply to have a longer life span, it is advisable to select one that has the appropriate power in order to extend the life span of a switching power supply. 

In precise terms, it is advisable to select one that is 30% higher than the rated output power. 

3. Consider load Regulation

This is a measure of how stable the voltage level is moving from the switching power supply into your device. 

Where you have motors, bulbs, or other capacitive load, you would need to select the suitable switching power supply to prevent a case of overload which could be caused by large current at the startup stage. 

4. Working temperature

It is also important to consider the temperature of your switching power supplies so that you know if you will need the additional auxiliary cooler. 

Output of switching power supplies will be reduced in cases of high temperature. 

5. Check Hold-up time

You need to check the amount of time that your switching power supplies can hold consistent level of nominal output voltage after its source has been removed. 

With this, you can save yourself interferences if there is unexpected overload or source outages on the input side. If switching power supplies have sub-standard capacitors that can not hold up the output long enough, transition to an uninterrupted power supply will fail. 

6. Check Line Regulation

This is also important, and it means a measure of how well the switching power supply can regulate the spikes and dampening of the electricity flowing out of the wall. 

For this reason, your design should be set up for regulating the voltage levels that it receives.  

Most suitable ways To Use switching Power Supplies

Here are some tips for using a switching power supply properly.

• You should confirm if the specifications of input or output voltage comply with nominal value of the power supply before use.

• Check if the input and output leads are appropriately connected before switching on, to prevent equipment damages.

• Confirm if various components are well tightened. Check for contacts between screws and electrical parts of power panel. Measure the level of insulation resistance between shell and input or output leads, to prevent electric shock.

• Ensure that the ground terminal is well connected to the ground to ensure safety and reduce noise waves.

• Frequent switching of power supply can cut short its life span. The operating environment and on-load level also influence the life span of switching power supplies.

Different Applications of Switching Power Supplies

The most important feature of a switching power supply when it comes to usage, is its efficiency. 

As earlier mentioned, when using switching power supplies there is a very small amount of power loss from the conversion of input to output power. 

This is why switching power supplies are used in applications where high efficiency is absolutely necessary. Some of these applications include:

1. Automobile chargers

2. Computers

3. Mobile devices chargers

4. Medical devices


These tips and suggestions will give you the needed idea on purchasing and using switching power supplies. 

Well, as much as you should consider these helpful suggestions, you should also make sure to get your switching power supplies from reputable manufactures with outstanding record of reliable services. That way, you can be sure of the best features in your switching power supply.


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